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Process Equipment and Plant Design

Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Increases
Remains same
Remains same, only if the number of tube passes does not change
Decreases

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

None of these
Avoid back-trapping
Allow for thermal expansion and facilitate installation
Drain the liquid from the tray when the unit is not in operation

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Process Equipment and Plant Design
In packed towers provided with saddle packing, liquid redistributors are positioned at every __________ times column diameter or 6 metres whichever is less.

20-25
43959
44119
43864

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

25
5
15
1

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Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Unpredictable
Same
Lower
Higher

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

May increase or decrease depending upon the plate spacing
Increases
Decreases
Remains same

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